1 /*- 2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 3 * Copyright (c) 2004-2011 Dag-Erling Smørgrav 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project by ThinkSec AS and 7 * Network Associates Laboratories, the Security Research Division of 8 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 9 * ("CBOSS"), as part of the DARPA CHATS research program. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote 20 * products derived from this software without specific prior written 21 * permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * $Id: pam_setenv.c 648 2013-03-05 17:54:27Z des $ 36 */ 37 38 #ifdef HAVE_CONFIG_H 39 # include "config.h" 40 #endif 41 42 #include <stdlib.h> 43 #include <stdio.h> 44 #include <string.h> 45 46 #include <security/pam_appl.h> 47 48 #include "openpam_impl.h" 49 #include "openpam_asprintf.h" 50 51 /* 52 * OpenPAM extension 53 * 54 * Set the value of an environment variable 55 * Mirrors setenv(3) 56 */ 57 58 int 59 pam_setenv(pam_handle_t *pamh, 60 const char *name, 61 const char *value, 62 int overwrite) 63 { 64 char *env; 65 int r; 66 67 ENTER(); 68 if (pamh == NULL) 69 RETURNC(PAM_SYSTEM_ERR); 70 71 /* sanity checks */ 72 if (name == NULL || value == NULL || strchr(name, '=') != NULL) 73 RETURNC(PAM_SYSTEM_ERR); 74 75 /* is it already there? */ 76 if (!overwrite && openpam_findenv(pamh, name, strlen(name)) >= 0) 77 RETURNC(PAM_SUCCESS); 78 79 /* set it... */ 80 if (asprintf(&env, "%s=%s", name, value) < 0) 81 RETURNC(PAM_BUF_ERR); 82 r = pam_putenv(pamh, env); 83 FREE(env); 84 RETURNC(r); 85 } 86 87 /* 88 * Error codes: 89 * 90 * =pam_putenv 91 * PAM_SYSTEM_ERR 92 * PAM_BUF_ERR 93 */ 94 95 /** 96 * The =pam_setenv function sets an environment variable. 97 * Its semantics are similar to those of =setenv, but it modifies the PAM 98 * context's environment list instead of the application's. 99 * 100 * >pam_getenv 101 * >pam_getenvlist 102 * >pam_putenv 103 */ 104